MazingerZ

As above, I am experiencing hesitation at 4000+ RPM, I searched in here and found the usual problems with MAF failure or dirty Boost selenoid. I have done a MAF test (by unplugging it, the engine stalled) and just cleaned the Boost selenoid and lines with brake cleaner.

What do you guys think? What else can I check? I inspected the MAF and it looks clean and shiny...

The engine is standard apart from a 4.5" jap backbox

Your opinions would be greatly appreciated

cheers

Koji

riggy10

Had this problem myself not very long ago, i found one of the pipes from under the filter trunking had split and come away, resolved this problem, changed fuel from bp ultimate back to shell v-power and all is o.k now. Had various replies from clutch slip to maf failure, but may be worth having a good look under the bonnet.

DazW

iTrader: (1)

Have you checked your coil packs?

slipstream_uk

iTrader: (1)

Had the similar problem a few weeks ago, car felt like it had no boost and it was running on 3 cylinders was using bp ultimate at the time. Cleaned out the MAF and the BOOST SOLENOID, stopped using bp ultimate moved over to esso super unleaded and done an ECU RESET. Problem cleared up nearly straight away, well a full tank of fuel.

MazingerZ

any special procedure to do this? the car idles and runs perfect below 4krpm

been around driving in town and noticed that it didnt hesitate after a while....


will check the pipework. thanks for your input guys!!!

koji

help2003

iTrader: (1)

got the same problem Fuel Cut, just found out what it is on mine, some **** has topped the oil up to much, (and no it was not me) only does it on full gas,

so will find out tomorrow, going to drain alittle off.

DazW

iTrader: (1)

Not really, just take them out & have a good look to see if they're breaking down or have hair line cracks ...it'll be pretty obvious if they're on there way out ...but be careful putting them back, they'll be brittle if they're quite old

when mine went, under full load & over 4K it felt like i was getting a misfire for a split second (pottering around & it was fine) & like you i checked the MAF & cleaned the boost solenoid, i found it was one of the packs by accident ...i was actually trying to check the plugs (suspicions raised by the misfire being worse when the weather was 'damp')

MazingerZ

Morning guys,

many thanks for all your inputs!!!!

After cleaning the boost selenoid, the hesitation has reduced, certainly it is not there while in 2nd but there is some in 3rd..... hmmmm

will check the coil packs then...

cheers

Koji